---
title: Actions must be used with server output.
i18nReady: true
githubURL: https://github.com/withastro/astro/blob/main/packages/astro/src/core/errors/errors-data.ts
---

> **ActionsWithoutServerOutputError**: A server is required to create callable backend functions. To deploy routes to a server, add an adapter to your Astro config and configure your route for on-demand rendering

## 무엇이 잘못되었나요?
Actions를 사용하여 백엔드 함수를 생성하려면 프로젝트에 서버 출력이 있어야 합니다.

**더 보기:**
-  [요청 시 렌더링](/ko/guides/on-demand-rendering/)


